Java——单例模式

Posted 2023-02-23 二师弟&

public class Singleton   
    private volatile static Singleton singleton;  
    private Singleton ()  
    public static Singleton getSingleton()   
    if (singleton == null)   
        synchronized (Singleton.class)   
            if (singleton == null)   
                singleton = new Singleton();  
              
          
      
    return singleton;